Approximately How Many Nerve Cells Does a Human Have

Question

Approximately how many nerve cells does a human have?
A)10 million
B)100 million
C)10 billion
D)100 billion
E)We do not have a good estimate of the number of nerve cells in a human body.

Accepted Answer

The estimated number of nerve cells, or neurons, in the human brain is around 100 billion. This number does not include the glial cells, which are support cells in the nervous system. While the exact number may vary slightly from person to person, this is the most commonly accepted estimate.